Tianjin Yuantai Derun Pipe Manufacturing Group Co., Ltd. includes 10 subsidiaries. It deserves a large united enterprise group with a registered fund of USD 65 million and fixed assets of USD 200 million. With annual production capacity of 5 million tons, Yuantai Derun is the biggest manufacturer of ERW square, rectangular pipe, hollow section pipe, galvanized pipe and spiral welding pipe in China. Annual sales reaches USD 1.5 biliion. Yuantai Derun has 59 production lines of black ERW pipe, 10 production lines of galvanized pipe and 3 production lines of spiral welding pipe. Square steel pipe from 20*20*1mm to 500*500*40mm, rectangular steel pipe from 20*30*1.2mm to 400*600*40mm, spiral pipe from Ø219—1420mm can be manufactured with the steel grade from Q(S)195 to Q(S)345B/Gr.A-Gr.D. Yuantai Derun can manufacture square rectangular pipes as per the standards of ASTM A500,JIS G3466, EN10219,DIN2240,AS1163. Yuantai Derun has the biggest square rectangular pipe stock in China which can meet customer’s direct procurement requirement. Years of technology accumulation makes Yuantai Derun possessing a wealth of production experience which can greatly shorten the development and production cycle of non-standard steel pipe and speed up the delivery time of customized products. At the same time Yuantai Derun also pays attention to advanced technology research and production use of advanced equipment, the production lines of 500*500mm, 300*300mm and 200*200mm are the most advanced equipment in China which can realize the electronic-controlling automation from the forming to the finishing.